Application US20210079223

BIODEGRADABLE THERMOPLASTIC MATERIAL MADE FROM CASEIN AND/OR CASEINATE
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US20210079223

1. A biodegradable thermoplastic comprising (in % by mass): (13) (5)

a) between 50 and 80% casein and/or caseinate, preferably between 52 and 75%, and still more preferably between 55 and 70%;

b) between 4 and 13% water, preferably between 4.5 and 12%, and still more preferably between 5 and 11%;

c) between 10 and 35% of at least one plasticizer different from b), preferably between 12 and 32%, and still more preferably between 15 and 28%;

d) between 0.1 and 8% of a hydrophobic agent, preferably between 0.5 and 6%, and still more preferably between 1 and 4%;

e) between 0.5 and 6% of at least one surfactant, preferably between 1 and 5%, and still more preferably between 1.5 and 4.5%.

2. The thermoplastic according to claim 1 wherein the plasticizer c) is selected from polyols, glycerol acetates, glycerol propionates and mixtures thereof, where preferably c) is glycerol. (0)

3. The thermoplastic according to claim 1, wherein the hydrophobic agent d) is selected from: (0) (3)

4. The thermoplastic according to claim 1, wherein the hydrophobic agent d) is a C6-C28 unsaturated fatty acid, preferably selected from palmitoleic acid, oleic acid, linoleic acid and mixtures thereof. (0)

5. The thermoplastic according to claim 1, wherein the surfactant e) is selected from zwitterionic surfactants whose HLB is included between 2 and 8. (0)

6. The thermoplastic according to claim 1, wherein the ratio of the quantities e) to d) is greater than or equal to 1. (0)

7. The thermoplastic according to claim 1, further comprising between 1 and 5% of an additive f) selected from sequestering agents. (0)

8. The thermoplastic according to claim 1, further comprising an additive g) selected from colorings; protein coagulants; anticaking agents; sliding agents, selected from polyethylene glycols and fatty chain compounds, preferably in C12-C28, with a terminal amide; and mixtures thereof. (0)

9. The thermoplastic according to claim 1, wherein it is hydrosoluble. (0)

10. The thermoplastic according to claim 1, wherein it is edible. (0)

11. Pellets of the thermoplastic according to claim 1. (0)

12. An object obtained after transformation by extrusion casting, extrusion blowing, film blowing, solvent casting, calendaring, injection, heat forming or drawing of the thermoplastic according to claim 1. (1) (0)

13. The object according to claim 12 wherein it comprises a film. (2) (0)

14. The film according to claim 13 wherein it is printed. (0)

15. The film according to claim 13 wherein it is heat shrinkable. (1) (0)

21. A method for packaging of a product using a film according to claim 15, comprising the following steps: (0) (4)

16. A product characterized in that it is packaged by a film according to claim 1. (3) (0)

20. A method for production of the thermoplastic according to claim 1, comprising the following steps: (0) (5)

E1 using an extruder, preferably a twin-screw extruder;

E2 adding compounds a) to e), and possibly f), into the extruder;

E3 retrieving at least one extruded rod of thermoplastic;

E4 possibly drying the rod;

E5 possibly crushing of the rod into pellets;

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Application US20210079223

BIODEGRADABLE THERMOPLASTIC MATERIAL MADE FROM CASEIN AND/OR CASEINATE

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